Update changelog

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 * **[Fix]** Config ignored `shouldRegisterUncaughtExceptionHandler` parameter in constructor.
 * **[Improvement]** Update `protobuf-c` to version 1.4.0.
+* **[Improvement]** Fix Xcode 13 deprecated build settings that might broke incremental builds (it drops workaround for Xcode's 12.0-12.4 bug). It only affects projects that use PLCrashReporter as sources.
 
 ___